uniappに認証コード認証機能を実装する方法

npm install js-captcha

import Captcha from 'js-captcha';

export function generateCaptcha() {
  const captcha = new Captcha();
  captcha.rotate = true;
  captcha.color = [0, 0, 0]; // 设置验证码字体颜色
  captcha.width = 200; // 设置验证码图片宽度
  captcha.height = 80; // 设置验证码图片高度
  const text = captcha.generate();
  const dataURL = captcha.getBase64();

  return {
    text,
    dataURL
  };
}

<template>
  <div>
    <img :src="captchaDataURL">
    <input type="text" v-model="captcha" placeholder="请输入验证码">
    <button @click="verifyCaptcha">验证</button>
  </div>
</template>

<script>
import { generateCaptcha } from '@/utils/captcha';

export default {
  data() {
    return {
      captcha: '',
      captchaDataURL: ''
    };
  },
  mounted() {
    const { text, dataURL } = generateCaptcha();
    this.captcha = text;
    this.captchaDataURL = dataURL;
  },
  methods: {
    verifyCaptcha() {
      // 在这里进行验证码验证逻辑
    }
  }
};
</script>

export default {
  // ...
  methods: {
    verifyCaptcha() {
      uni.request({
        url: 'http://your-backend-server.com/verifyCaptcha',
        method: 'POST',
        data: {
          captcha: this.captcha
        },
        success: (res) => {
          if (res.data.success) {
            uni.showToast({
              title: '验证成功',
              icon: 'success'
            });
          } else {
            uni.showToast({
              title: '验证失败，请重新输入',
              icon: 'none'
            });
          }
        },
        fail: (err) => {
          console.log(err);
        }
      });
    }
  }
};

const express = require('express');
const app = express();
const bodyParser = require('body-parser');

app.use(bodyParser.urlencoded({ extended: false }));
app.use(bodyParser.json());

app.post('/verifyCaptcha', (req, res) => {
  const { captcha } = req.body;

  // 在这里进行验证码验证逻辑，比较captcha和生成的验证码文本即可

  if (captcha === '生成的验证码文本') {
    res.json({ success: true });
  } else {
    res.json({ success: false });
  }
});

app.listen(3000, () => {
  console.log('Server started on port 3000');
});